<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="js/vue.js"></script>
</head>

<body>
    <div id="app">
        省份 <select>
            <option>请选择省份</option>
            <option v-for="item in list">{{item.cityname}}</option>
        </select>
        城市<select></select>
        区县<select></select>
    </div>
</body>
<script>
    new Vue({
        el: "#app",
        data: {

            list: [{ id: 1, cityname: "湖北", list: [{ id: 11, cityname: "武汉", list: [{ id: 111, cityname: "江夏" }, { id: 112, cityname: "洪山" }] }, { id: 12, cityname: "荆州", list: [{ id: 121, cityname: "沙市" }, { id: 122, cityname: "松滋" }] }] }, { id: 2, cityname: "河南", list: [{ id: 21, cityname: "郑州", list: [{ id: 211, cityname: "新郑" }, { id: 212, cityname: "金水" }] }, { id: 22, cityname: "洛阳", list: [{ id: 221, cityname: "洛阳的区一" }, { id: 222, cityname: "洛阳的区二" }] }] }]


        }
    })

</script>

</html>